To add and build the commands you should have done the following:
<Save counter.java to the prim area.>
<Save sayhello.mm to the mcr area.>
nM>
nM> update counter
Option tree (USER, SITE, UCL, etc): [] -> train
COUNTER Abbreviation: [COUNTER] ->
Support [M] -> P
Number of arguments [0] -> 2
Default 1 [] -> START=1
Default 2 [] -> END=10
nM>
nM>
nM> update sayhello
Option tree (USER, SITE, UCL, etc): [] -> train
SAYHELLO Abbreviation: [SAYHELLO] ->
Support [M] ->
Number of arguments [0] -> 1
Default 1 [] -> NAME="Anonymous"
nM>
nM>
nM> make all train
<Builds the option tree>